* {
    margin: 0;
    padding: 0;
}
body {
    margin: 0;
    border: none;
    font-size: 16px;
}
a {
    text-decoration: none; 
}
.practice,.blog,.project,.contact-us,.footer {
    padding: 0 calc(50% - 450px);
    border: 1px solid red;
}
/* header */
.header {
    position: fixed;
    padding: 10px calc(50% - 450px) 0;
}
.h-container {
    min-width: 900px;
    /* height: 50px; */
}
.nav-log {
    display: inline-block;
    position: absolute;
    margin-top: 5px;
}
.nav-log-text {
    color: #FFFFFF;
    font-weight: normal;
}
.nav-log-description {
    color: rgba(255,255,255,.5);
    font-size: 0.8em;
}
.nav{
    display: inline-block;
    float: right;
}
.nav-color {
    color: #FFFFFF;
}
.nav-color.active {
    color: #C2534A;
}
.nav-list>li {
    display: inline-block;
    margin-right: 20px;
    height: 50px;
    font-size: 1.2em;
    color: #FFFFFF;
    line-height: 50px;
}
.clear::after{
    content: "";
    clear: both;
    display: block;
}
/* banner */
.banner-item1 {
    background-image: url("../img/banner-bg-1.jpg");
    background-repeat: no-repeat;
    background-size: cover;
}
/* 各个section通用文本样式 */
.section-common-title {
    margin: 40px;
    font-size: 2.0em;
    text-align: center;
}
.section-common-paragraph {
    margin: 20px;
    text-align: center;
}
/* section practice */
.practice-wrap {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    min-width:900px;
}
.practice-wrap-item {
    margin: auto;
    width: 25%;
    height: 80%;
    background: #00FF00;
    border: 1px solid red;
}
.practice-item {
    height: 100%;
}
.practice-img {
    height: 80%;
    width: 100%;
    background: #0000FF;
}
.practice-img-title {
     border: 1px solid red;
     margin: 2px;
     text-align: center;
}
/* blog */
.blog-wrap {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    min-width:900px;
}
.blog-wrap-item {
    margin: auto;
    width: 40%;
    height: 90%;
    background: #00FF00;
    /* border: 1px solid red; */
}
.blog-wrap-hottitle {
    height: 2em;
    
 /*    padding: 20px 0 0 0; */
    text-align: center;
}
.blog-item {
    height: 20%;
    border: height;
}
.blog-img {
    display: inline-block;
    margin-left: 20px;

    height: 100%;
    width: 25%;
    
    background: #0000FF;
    border-radius: 50%;
}
.blog-img-title {
    display: inline-block;
    vertical-align: top;

    position: relative;
    top: 2em;
    width: 60%;

    text-align: center;
}
/* * {
    margin: 0;
    padding: 0;
    border: none;
    font-family: "Microsoft YaHei UI Light", serif;
}
a {
     width : calc(50% - 2em);
}
html,
body {
    height: 100%;
}

body {
    background-image:url(../img/bg.png);
}


首页字体页面统一样式

.hello {
    font-size: 5em;
    font-weight: lighter;
}


banner

.banner {
    width: 100%;
}

.banner>.welcome {
    position: absolute;
    z-index: 1;
    text-align: center;
    width: 100%;
    height: 40%;
    top: 40%;
    color: #000000;
    -webkit-user-select: none;
    -ms-user-select: none;
}

.banner>.welcome>h1 {
    color: #C42525;
}

.banner>.welcome>p {
    font-size: 36px;
}


footer

footer {
    width: 100%;
    height: 50px;
    position: fixed;
    bottom: 0;
    opacity: 0.9;
}

footer>.container {
    width: 1200px;
    height: 64px;
    margin: 0 auto;
}

footer>.container>p {
    line-height: 50px;
    float: left;
    color: #000000;
    font-weight: bold;
}

footer>.container>span {
    float: right;
    margin: 10px 40px;
}

footer>.container>span>a>img {
    margin-left: 10px;
}
 */